For a sapphire (Al2O3) window (refractive index NA1203 = 1.76) at an electromagnetic radiation wavelength in vacuum of 0.7 pm: (a) If 1 mW/m? of electromagnetic radiation propagates inside the sapphire window, calculate the intensity of electromagnetic radiation reflected from the sapphire window-to-vacuum interface for an angle of incidence of 10°. (b) What is Brewster's angle for radiation incident from vacuum onto the sapphire window? (c) At Brewster's angle what is the transmittance of S-polarized and P-polarized light? (d) Under what conditions would the radiation undergo total internal reflection inside the window?

For a sapphire (Al2O3) window (refractive index NA1203 = 1.76) at an electromagnetic radiation wavelength in vacuum of 0.7 pm: (a) If 1 mW/m? of electromagnetic radiation propagates inside the sapphire window, calculate the intensity of electromagnetic radiation reflected from the sapphire window-to-vacuum interface for an angle of incidence of 10°. (b) What is Brewster's angle for radiation incident from vacuum onto the sapphire window? (c) At Brewster's angle what is the transmittance of S-polarized and P-polarized light? (d) Under what conditions would the radiation undergo total internal reflection inside the window?